31022231421 has 16 divisors (see below), whose sum is σ = 41433634368. Its totient is φ = 20646192000.

The previous prime is 31022231411. The next prime is 31022231473. The reversal of 31022231421 is 12413222013.

It is not a de Polignac number, because 31022231421 - 2¹⁰ = 31022230397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31022231411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5423455 + ... + 5429171.

It is an arithmetic number, because the mean of its divisors is an integer number (2589602148).

Almost surely, 2^31022231421 is an apocalyptic number.

It is an amenable number.

31022231421 is a deficient number, since it is larger than the sum of its proper divisors (10411402947).

31022231421 is a wasteful number, since it uses less digits than its factorization.

31022231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8492.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31022231421 its reverse (12413222013), we get a palindrome (43435453434).

The spelling of 31022231421 in words is "thirty-one billion, twenty-two million, two hundred thirty-one thousand, four hundred twenty-one".